This sounds like you could be having a problem with the Starter Motor Relay which is located in the right front inner fender well, near the battery. In the diagrams down below I have included a wiring diagram of your vehicle's starting circuit as well as a diagram of the Starter Relay location for you. Here is a link for you to go to on how to test a relay:
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.